Y Gadair Wag sioe farddoniaeth amlgyfrwng gan Ifor ap Glyn, Bardd Cenedlaethol Cymru yn Neuadd Trawsfynydd am y tro cyntaf ar y 6ed Medi 2017, i goffáu canmlwyddiant Eisteddfod Penbedw, Eisteddfod y Gadair Ddu. http://www.llenyddiaethcymru.org/our-projects/barddoniaeth-colled/7824-2/

Y Gadair Wag (The Empty Chair) is a new multi-platform poetry show by National Poet of Wales, Ifor ap Glyn, which approaches the story of Hedd Wyn from a fresh angle and examines themes of loss, borders and humanity. First performed at Trawsfynydd Village Hall 6th September 2017, commemorating the centenary of the Birkenhead Eisteddfod, "The Black Chair Eisteddfod).
http://www.literaturewales.org/our-projects/poetry-of-loss/y-gadair-wag/